<script type="x-webgl/x-vertex-shader" id="vertexShader">
attribute vec2 aVertexPosition;

void main() {
  gl_Position = vec4(aVertexPosition, 0.0, 1.0);
}
</script>
<script type="x-webgl/x-fragment-shader" id="fragmentShader">
uniform vec4 uColor;

void main() {
  gl_FragColor = uColor;
}
</script>
